Now includes the suburbs and goes up to 2005:
http://www.groceteria.com/place/new-york/buffalo/
Small update. Lockport now goes through 2015:
https://www.groceteria.com/place/new-yo ... /lockport/
https://www.groceteria.com/place/new-yo ... /lockport/
Of note: Buffalo is probably the largest city in the US to never have had an Albertsons, Kroger, or Safeway presence.